103387861081 has 2 divisors, whose sum is σ = 103387861082. Its totient is φ = 103387861080.

The previous prime is 103387861061. The next prime is 103387861097. The reversal of 103387861081 is 180168783301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55998489600 + 47389371481 = 236640^2 + 217691^2 .

It is a cyclic number.

It is not a de Polignac number, because 103387861081 - 2¹³ = 103387852889 is a prime.

It is a super-2 number, since 2×103387861081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (103387861051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51693930540 + 51693930541.

It is an arithmetic number, because the mean of its divisors is an integer number (51693930541).

Almost surely, 2^103387861081 is an apocalyptic number.

It is an amenable number.

103387861081 is a deficient number, since it is larger than the sum of its proper divisors (1).

103387861081 is an equidigital number, since it uses as much as digits as its factorization.

103387861081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 46.

The spelling of 103387861081 in words is "one hundred three billion, three hundred eighty-seven million, eight hundred sixty-one thousand, eighty-one".